Bitcoin is not a business. Their are no representative promoting it for criminal activities.
Samourai is a business. There are people running that business. Those people are identifiable. They promoted their services to avoid sanctions to Russian oligarchs. The US is engaged in a proxi war with Russia.
They knew their service was used for criminal activities, why make it worste by welcoming Russian oligarchs looking to circumvent senctiond.
To use your expression, they fucked themselves over.